Buggy code:
public class BeanRecipe extends AbstractRecipe { private static final Logger LOGGER = LoggerFactory . getLogger ( BeanRecipe . class ) ; private final ExtendedBlueprintContainer blueprintContainer ; private final LinkedHashMap < String , Object > properties = new LinkedHashMap < String , Object > ( ) ; private final Object type ; private String initMethod ; private String destroyMethod ; private List < Recipe > explicitDependencies ; private Recipe factory ; private String factoryMethod ; private List < Object > arguments ; private List < String > argTypes ; private boolean reorderArguments ; private final boolean allowsFieldInjection ; private BeanMetadata interceptorLookupKey ; public BeanRecipe ( String name , ExtendedBlueprintContainer blueprintContainer , Object type , boolean allowsFieldInjection ) { } public Object getProperty ( String name ) { } public Map < String , Object > getProperties ( ) { } public void setProperty ( String name , Object value ) { } public void setFactoryMethod ( String method ) { } public void setFactoryComponent ( Recipe factory ) { } public void setArgTypes ( List < String > argTypes ) { } public void setArguments ( List < Object > arguments ) { } public void setReorderArguments ( boolean reorder ) { } public void setInitMethod ( String initMethod ) { } public String getInitMethod ( ) { } public void setDestroyMethod ( String destroyMethod ) { } public String getDestroyMethod ( ) { } public List < Recipe > getExplicitDependencies ( ) { } public void setExplicitDependencies ( List < Recipe > explicitDependencies ) { } public void setInterceptorLookupKey ( BeanMetadata metadata ) { } @ Override public List < Recipe > getConstructorDependencies ( ) { } public List < Recipe > getDependencies ( ) { } private void instantiateExplicitDependencies ( ) { } @ Override protected Class loadClass ( String className ) { } @ Override protected ReifiedType loadType ( String className ) { } private Object getInstance ( ) throws ComponentDefinitionException { } private Map < Method , List < Object > > findMatchingMethods ( Class type , String name , boolean instance , List < Object > args , List < ReifiedType > types ) { } private static List < Method > applyStaticHidingRules ( Collection < Method > methods ) { } private static boolean hasIdenticalParameters ( Method one , Method two ) { } private Map < Constructor , List < Object > > findMatchingConstructors ( Class type , List < Object > args , List < ReifiedType > types ) { } protected Method getInitMethod ( Object instance ) throws ComponentDefinitionException { } public Method getDestroyMethod ( Object instance ) throws ComponentDefinitionException { Method method = null ; <START_BUG> if ( ( ( destroyMethod ) != null ) && ( ( destroyMethod . length ( ) ) > 0 ) ) { <END_BUG> method = ReflectionUtils . getLifecycleMethod ( instance . getClass ( ) , destroyMethod ) ; if ( method == null ) { throw new ComponentDefinitionException ( ( ( ( "Component<seq2seq4repair_space>'" + ( getName ( ) ) ) + "'<seq2seq4repair_space>does<seq2seq4repair_space>not<seq2seq4repair_space>have<seq2seq4repair_space>destroy-method:<seq2seq4repair_space>" ) + ( destroyMethod ) ) ) ; } } return method ; } private static class BeanCreatorChain implements BeanProcessor . BeanCreator { public enum ChainType { Before , After ; } private final BeanCreator parentBeanCreator ; private final BeanProcessor parentBeanProcessor ; private final BeanMetadata beanData ; private final String beanName ; private final BeanRecipe . BeanCreatorChain . ChainType when ; public BeanCreatorChain ( BeanProcessor . BeanCreator parentBeanCreator , BeanProcessor parentBeanProcessor , BeanMetadata beanData , String beanName , BeanRecipe . BeanCreatorChain . ChainType when ) { } public Object getBean ( ) { } } private Object runBeanProcPreInit ( Object obj ) { } private void runBeanProcInit ( Method initMethod , Object obj ) { } private Object runBeanProcPostInit ( Object obj ) { } private Object addInterceptors ( final Object original ) throws ComponentDefinitionException { } @ Override protected Object internalCreate ( ) throws ComponentDefinitionException { } @ Override public void destroy ( Object obj ) { } public void setProperties ( Object instance ) throws ComponentDefinitionException { } public Class getType ( ) { } private void setProperties ( Map < String , Object > propertyValues , Object instance , Class clazz ) { } private void setProperty ( Object instance , Class clazz , String propertyName , Object propertyValue ) { } private PropertyDescriptor getPropertyDescriptor ( Class < ? > clazz , String name ) { } private Object invoke ( Method method , Object instance , Object ... args ) throws Exception { } private Object newInstance ( Constructor constructor , Object ... args ) throws Exception { } private static Object UNMATCHED = new Object ( ) ; private class ArgumentMatcher { private final List < BeanRecipe . TypeEntry > entries ; private final boolean convert ; public ArgumentMatcher ( Type [ ] types , boolean convert ) { } public List < Object > match ( List < Object > arguments , List < ReifiedType > forcedTypes ) { } private List < Object > getArguments ( ) { } private boolean find ( List < Object > arguments , List < ReifiedType > forcedTypes ) { } private boolean find ( Object arg , ReifiedType forcedType ) { } } private static class TypeEntry { private final ReifiedType type ; private Object argument ; public TypeEntry ( ReifiedType type ) { } } }

Fix:
if ( ( ( instance != null ) && ( ( destroyMethod ) != null ) ) && ( ( destroyMethod . length ( ) ) > 0 ) ) {